Currently I don't have it scheduled for any particular release. In practice this will tie into other internal resource management changes that are on the to-do list. But generally I'll just need to decide when is the appropriate time to work on this topic area.

The short term roadmap is looking like this:

2.1 released in December

2.2 released before April, with SDL 2 replacing Qt plus other internal upgrades — not many user-facing changes as such